| Clue | Source | Date |
|---|---|---|
| Trap gutless spies outside air bases | The Times Sunday Cryptic | 29 Jun 2025 |
| Monopolise rocks that are important in building (6,6) | ||
| Control supply of rocks that are important in building | ||
| Indispensable elements (12) | ||
| Gain monopoly in rocks important in building | ||
| Don't let gems go -- they are of great importance | The Telegraph Toughie | 10 Nov 2022 |
| Controls around southern air bases | ||
| Individuals going after growth, formerly seen as linchpins | The Telegraph Toughie | 28 Mar 2017 |
| Building blocks |